JoeSchmuckatelli Posted October 15, 2023 Author Share Posted October 15, 2023 "You can't farm spiders" https://bigthink.com/the-future/crispr-spider-silk-silkworms/ Adding spider DNA to silkworms creates silk stronger than Kevlar Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted October 15, 2023 Share Posted October 15, 2023 Quote Nature: "So, you get eight legs." Spider: "Do I need eight legs?" Nature: "To say the truth, nobody needs eight of something." Spider: "?" Nature: "..." Spider: "???" Nature: "Here you get also eight eyes and a thread from your <wordfilter>" Spider: "..." Quote Link to comment Share on other sites More sharing options...
Exoscientist Posted October 16, 2023 Share Posted October 16, 2023 This Ultradense Asteroid May Contain Elements We’ve Never Seen Before A new study suggests that atoms could be stable at atomic number 164, which could help explain recent measurements of the ultradense asteroid 33 Polyhymnia. BY DARREN ORFPUBLISHED: OCT 13, 2023 https://www.popularmechanics.com/space/solar-system/a45522962/new-element-asteroid/# Not saying it’s aliens but … ;-) Bob Clark Quote Link to comment Share on other sites More sharing options...
DDE Posted October 16, 2023 Share Posted October 16, 2023 14 minutes ago, Exoscientist said: Not saying it’s aliens but … ;-) CUDOs to them, but I'd be more excited about a primordial black hole. Quote Link to comment Share on other sites More sharing options...
farmerben Posted October 16, 2023 Share Posted October 16, 2023 http://benoit.carry.free.fr/publication/refereed/2012-PSS-73-Carry.pdf There are several outliers in this data. Even the uncertainty in the data is problematic. One thing I noticed is they measured Psyche to be 3.3 g/cm3 ( +/- 1.1). That seems low. Soon we will have better data. Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted October 16, 2023 Share Posted October 16, 2023 2 hours ago, Exoscientist said: This Ultradense Asteroid May Contain Elements We’ve Never Seen Before A new study suggests that atoms could be stable at atomic number 164, which could help explain recent measurements of the ultradense asteroid 33 Polyhymnia. BY DARREN ORFPUBLISHED: OCT 13, 2023 https://www.popularmechanics.com/space/solar-system/a45522962/new-element-asteroid/# Not saying it’s aliens but … ;-) Bob Clark Perhaps a few specks of neutronium? Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted October 16, 2023 Share Posted October 16, 2023 It's the first piece of a Kerbal planet ever discovered irl. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted October 17, 2023 Share Posted October 17, 2023 18 hours ago, DDE said: CUDOs to them, but I'd be more excited about a primordial black hole. But that should consume the asteroid. Most likely its an error as they found the mass calculating how it affect other asteroids and its error margins here. Flag as weird. Quote Link to comment Share on other sites More sharing options...
DDE Posted October 17, 2023 Share Posted October 17, 2023 11 hours ago, magnemoe said: But that should consume the asteroid. Apparently because of how they behave, emitting more radiation as they starve, which evaporates the insides of the asteroid and "feeds" them, they'll achieve a sort of a stable condition after they hollow the asteroid out. Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted October 20, 2023 Share Posted October 20, 2023 In case anyone didn't already know, stay the frack away from fructose! Layman's article: Major Study Claims to Identify The Root Cause of Obesity: Fructose : ScienceAlert Actual study linked in above article: The fructose survival hypothesis as a mechanism for unifying the various obesity hypotheses (wiley.com) Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted October 21, 2023 Share Posted October 21, 2023 This makes me thinking that a pig is a fruit, as with the pig lard the picture looks the same, it's hard to stop when eating it. Probably, made of fructose. On the other hand, it would make the pork vegan. Quote Link to comment Share on other sites More sharing options...
darthgently Posted October 21, 2023 Share Posted October 21, 2023 (edited) 8 hours ago, StrandedonEarth said: In case anyone didn't already know, stay the frack away from fructose! Layman's article: Major Study Claims to Identify The Root Cause of Obesity: Fructose : ScienceAlert Actual study linked in above article: The fructose survival hypothesis as a mechanism for unifying the various obesity hypotheses (wiley.com) And stay active. If you are sedentary but eat like a laborer you will pay a high price. But quantity/quality of food aside, physical activity is the foundation for a lot of our metabolism from cellular level up to the entire circulatory and respiratory functions, even brain and nervous system. All designed around motion in so many ways Edited October 21, 2023 by darthgently Quote Link to comment Share on other sites More sharing options...
AckSed Posted October 31, 2023 Share Posted October 31, 2023 Pilot power plant utilising supercritical CO2 turbine completed. This is very cool stuff. Supercritical CO2 not only makes the turbines 10% more efficient, it allows them to be smaller. Much smaller. Like, ten times smaller. If a normal 10MW steam turbine is the size of two tyres off one of those giant mining trucks stuck together, this is able to fit into its passenger seat. Spoiler The US is very interested in these for making concentrating solar power more efficient. It also makes the whole plant much smaller and uses less water, whatever you use for heat. Quote Link to comment Share on other sites More sharing options...
AckSed Posted November 2, 2023 Share Posted November 2, 2023 https://www.nasa.gov/centers-and-facilities/marshall/nasas-innovative-rocket-nozzle-paves-way-for-deep-space-missions/ A new aluminium alloy was used to 3D-print rocket nozzles with integral cooling channels. Exciting, because aluminium is pretty abundant and lightweight; the alloy itself seems to be a tweak of 6061, which is ~98% aluminium with magnesium, silicon and some trace elements, none of them cripplingly rare on the Moon. It's interesting because I remember seeing aluminium rocket engines proposed for the miniaturised 'Mockingbird' SSTO, as well as the departed XCOR Aerospace trying much the same 3D-printed thing a decade earlier. They're clearly getting some good results, as running it on methalox and hydrolox, for 10 minutes, with 22 restarts and at chamber pressures of 56 bar (the RL10-C runs at 102bar) makes for a convincing expression of confidence; good for lunar lander engine, boost stage or clustered for medium-lift rocket. I don't know what the powerhead would be, though. They're even printing aerospikes with integral cooling channels, which has possibilities when you run it alongside expander cycle. Quote Link to comment Share on other sites More sharing options...
DDE Posted November 6, 2023 Share Posted November 6, 2023 Tonight's solar storm has painted the sky all the way to Southern Russia. Quote Link to comment Share on other sites More sharing options...
DDE Posted November 6, 2023 Share Posted November 6, 2023 54 minutes ago, DDE said: Tonight's solar storm has painted the sky all the way to Southern Russia. It was apparently misidentified as a G1 when it's proving to be a G3. https://xras.ru/info/20231105.html Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted November 6, 2023 Share Posted November 6, 2023 Mysteriously, the Soviet anthem was sounding from heaven while the red flag was illuminating the skies... Quote Link to comment Share on other sites More sharing options...
SunlitZelkova Posted November 7, 2023 Share Posted November 7, 2023 (edited) 14 hours ago, kerbiloid said: Mysteriously, the Soviet anthem was sounding from heaven while the red flag was illuminating the skies... According to my pen pal Lev, a hammer and sickle shaped UFO was spotted near Ulyanovsk. He sent me a picture, but the spirit of Marx overwhelmed me and warned me not to share it, so I won't. Spoiler Of course, this is in itself a psychic UFO incident, because Marx was an alien. Edited November 7, 2023 by SunlitZelkova Quote Link to comment Share on other sites More sharing options...
DDE Posted November 7, 2023 Share Posted November 7, 2023 17 hours ago, kerbiloid said: Mysteriously, the Soviet anthem was sounding from heaven while the red flag was illuminating the skies... To be fair, at Bryansk (which is in the tri-border area) it looked suspiciously like the Belarusian flag. Quote Link to comment Share on other sites More sharing options...
darthgently Posted November 7, 2023 Share Posted November 7, 2023 (edited) From an admittedly US pov, the red one looks more like watermelon Jolly Rancher while the other looks like watermelon next to sour apple Jolly Rancher. No flags seen... Edited November 7, 2023 by darthgently Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted November 7, 2023 Share Posted November 7, 2023 5 hours ago, DDE said: To be fair, at Bryansk (which is in the tri-border area) it looked suspiciously like the Belarusian flag. 22 hours ago, kerbiloid said: Soviet So, that's correct. 1 hour ago, darthgently said: From an admittedly US pov, the red one looks more like watermelon Jolly Rancher while the other looks like watermelon next to sour apple Jolly Rancher. No flags seen.. Any stars were seen from there? Spoiler Quote Link to comment Share on other sites More sharing options...
darthgently Posted November 7, 2023 Share Posted November 7, 2023 34 minutes ago, kerbiloid said: Any stars were seen from there? Now you are just being silly Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted November 8, 2023 Share Posted November 8, 2023 Always thinking about something for food. It's so natural for the world of capitalism... On the optimistic note: the space muons look so red this week. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted November 11, 2023 Author Share Posted November 11, 2023 If You Account for the Laniakea Supercluster, The Hubble Tension Might Be Even Larger Quote When the team measured the gravitational influence of the supercluster as a whole, they found it does bias our observations by about 2% – 3%. But it’s biased in the wrong direction. In other words, by not taking the effect of Laniakea into account, the Hubble tension seemed smaller than it actually is. These new results show that the tension is 2% – 3% greater than we thought. Even some of the more recent Hubble constant measurements that seemed encouraging aren’t enough to account for the Laniakea bias. https://www.universetoday.com/164198/if-you-account-for-the-laniakea-supercluster-the-hubble-tension-might-be-even-larger/ Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted November 11, 2023 Author Share Posted November 11, 2023 Also, for those interested, I just discovered another tension wrt the standard model of cosmology (LambdaCDM), called the 'S8 Tension' .* The S8 tension is fairly simple to explain: it is a parameter used in simulations of dark matter that characterizes how 'lumpy' or strongly clustered the matter in the universe is. The value can be derived from measurements of low-redshift observations, like 'weak gravitational lensing surveys'. (Observational). The value can also be predicted via the standard model - by tuning the model to match known properties of the Cosmic Microwave Background. The problem is that CMB experiments find a higher value of S8 than do weak gravitational lensing surveys. Cosmologists don't know why, hence the 'tension'. Anyway, the S8 tension just got more interesting after the FLAMINGO group decided to do something novel. Most simulations of dark matter seeking to emulate the observed supercluster and filaments seen in the universe only consider the effects of dark matter - they don't try to include baryonic matter in the simulation. The FLAMINGO** group did. Because DM is only affected by gravity, adding in normal baryonic matter - which is affected not only by gravity, but also gas pressure (winds driven by supernova explosions and actively accreting supermassive black holes, for example) changed the result of the simulation in unexpected ways. Quote ...even the new work's consideration of ordinary matter as well as some of the most extreme galactic winds was not sufficient to explain the weak clumping of matter observed in the present-day universe. "Here I am at a loss," Schaye told Space.com. "An exciting possibility is that the tension is pointing to shortcomings in the standard model of cosmology, or even the standard model of physics." https://www.space.com/largest-computer-simulation-of-universe-s8-debate Quote A number of recent studies have found evidence for a tension between observations of large-scale structure (LSS) and the predictions of the standard model of cosmology with the cosmological parameters fit to the cosmic microwave background (CMB). The origin of this ‘S8 tension’ remains unclear, but possibilities include new physics beyond the standard model, unaccounted for systematic errors in the observational measurements and/or uncertainties in the role that baryons play. Quote ... We emphasize, however, that the most strongly discrepant power spectrum we examined is the Planck tSZ effect power spectrum, which is primarily sensitive to low-redshift, massive clusters which are baryonically closed, dominated by hot gas, and for which X-ray and tSZ surveys are typically highly complete. Increasing feedback at higher redshifts will not significantly impact this metric. If neither feedback nor unaccounted for (or mischaracterized) systematic errors are behind the tension (though it will require additional work to conclusively demonstrate the latter), then the exciting implication would appear to be that new physics, perhaps in the dark sector, is required. (emphasis mine) https://academic.oup.com/mnras/article/526/4/5494/7310881 I find these tensions fascinating areas of cosmology to read about. They remind me that physics and cosmology are not 'complete' sciences, where everything is known. Researchers are constantly 'picking at the edges' and finding discrepancies. I'm also glad to see them getting published. There was a period of time about 30 years ago where any time anyone questioned the LCDM model, they were mocked and shouted down (on boards like these - looking at you, BadAstronomy). Dogmatic thinking isn't useful in science. *Freely admit, I don't know much about it - but it is interesting. **FLAMINGO is a project of the Virgo consortium for cosmological supercomputer simulations. The acronym stands for Full-hydro Large-scale structure simulations with All-sky Mapping for the Interpretation of Next Generation Observations. FLAMINGO Project - Videos: https://flamingo.strw.leidenuniv.nl/video_gallery.html Really beautiful and trippy simulations! Quote Link to comment Share on other sites More sharing options...
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